Add debug logs for data loading and processing steps

[ludeknovy]

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 17 lines in your changes missing coverage. Please review.

Project coverage is 52.56%. Comparing base (e914265) to head (f462016).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
...er/controllers/item/shared/item-data-processing.ts	0.00%	17 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #353      +/-   ##
==========================================
- Coverage   53.09%   52.56%   -0.53%     
==========================================
  Files         102      102              
  Lines        1699     1716      +17     
  Branches      155      155              
==========================================
  Hits          902      902              
- Misses        778      795      +17     
  Partials       19       19              

Flag	Coverage Δ
unittests	52.56% <0.00%> (-0.53%)	⬇️

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[ddennerline3]

Thanks so much for creating this PR. It'll be very helpful for identifying the root cause of the OoM issue.
I don't have access to the database logs right now because we use TimscaleDB SaaS.